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Finding the Fourth Proportional to 911,793.40, 1,368,813.30 and 574,833.40

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Solution

The fourth proportional to 911,793.40, 1,368,813.30 and 574,833.40 is: 862,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,793.40 : 1,368,813.30 = 574,833.40 : x
  2. Step 2: Convert to fraction form
    911,793.40/1,368,813.30 = 574,833.40/x
  3. Step 3: Cross multiply
    911,793.40x = 1,368,813.30 × 574,833.40
  4. Step 4: Simplify right side
    911,793.40x = 786,839,603,204.22
  5. Step 5: Solve for x
    x = 786,839,603,204.22/911,793.40
  6. Step 6: Final answer
    x = 862,958.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.